CVE-2026-84131
Received Received - Intake

Privilege Escalation in Firefox Due to Invalid Pointer in Graphics

Publication date: 2026-09-01

Last updated on: 2026-09-01

Assigner: Mozilla Corporation

Description
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.

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Meta Information

Published
2026-09-01
Last Modified
2026-09-01
Generated
2026-09-01
AI Q&A
2026-09-01
EPSS Evaluated
N/A
NVD
CVE-2026-84131
EUVD
EUVD-2026-69067

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
mozilla firefox to 155 (inc)
mozilla firefox_esr to 115.40 (inc)
mozilla firefox_esr to 140.15 (inc)
mozilla firefox_esr to 153.2 (inc)
mozilla firefox 155
mozilla firefox_esr 115.40
mozilla firefox_esr 140.15
mozilla firefox_esr 153.2

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a privilege escalation vulnerability caused by an invalid pointer in the Graphics component of Firefox. It allows attackers to gain higher privileges than intended, potentially leading to unauthorized system access or control.

Impact Analysis

If exploited, this vulnerability could let attackers execute arbitrary code, install malware, or access sensitive data on your system. Users running vulnerable Firefox versions should update immediately to mitigate risks.

Mitigation Strategies

Update Firefox to version 155 or later, Firefox ESR to version 115.40 or later, Firefox ESR to version 140.15 or later, or Firefox ESR to version 153.2 or later to address the privilege escalation vulnerability.

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